Hello,This is my first post, although I'm a seasoned simmer (since the C64 days!) and have been lurking around here for years.My problem is as follows:1. I recently purchased a HIS Radeon 9800 Pro IceQ Graphics card, replacing the original Radeon 9100 (!). At the same time I purchased and installed a new power supply.2. Having de-installed the old drivers and installed the new ATI drivers (Catalyst 4.8), I got the following error message: "No ATI Graphics driver is installed or the ATI drivers are not functioning properly". Under the hardware manager I got a MS error code: "Code 10 device is not recognised", although if I look under "Drivers" the drivers are installed correctly (ATI version 6.14.10.6467). 3. I've spent 3 hours with a technician at the company where I bought the card, installed the latest mobo drivers, called the ATI helpdesk, searched AVSIM and "googled" the problem - all without any solution so far. Also I'm up to date with MS Service Packs.4. Please anyone help! I'm sure it's probably an XP/driver conflict, but I'd like to avoid doing a re-installation of XP.My systems specs are:Intel® Pentium® 4 CPU 2.66GHz768MB RAMMicro-Star MS-6585, F1 ver 20A, 648 Max SIS 983 chipsatzRealtek AC97 AudioBe quiet! Blackline 350W ATX 12V 1.3HIS Radeon 9800 Pro IceQ, 128MB DDRDirectX 9.0c (4.09.0000.0904)Windows XP Home Edition (5.1, Build 2600) Service Pack 2 Sorry for the long first post, but this problem is really annoying!Best regards,Michael Sachs

maybe the powersupply you bought is bunk.try this:disconnect the power from the video card.use a different power connection coming off the power supply. make sure the 9800 is the only thing hooked up on that wire. if you dont have an extra power connection, unplug unneccessary devices (floppy drive, cd drives) and create one. but in the end, make sure the wire you are using is different than the one that was originally hooked up to the card.

Thanks very much for your suggestion, but I don't think the problem is with the card itself. During the 3 hour session with the techcnician, he did in fact take another harddisk with a freshly installed XP, and everything worked perfectly fine (the card being recognised and working properly). From that we concluded that the BIOS settings are OK, and the card itself is fine (including the power supplied). But thanks again for your suggestion and if you have any other ideas please let me know.Best regards,Michael Sachs

oh ok, sounds like you may have found the general source of problem...

Well, yes I believe it's a Driver / XP conflict, but other than that I'm not any wiser. Has anyone had this "error code 10" in their Hardware Manager, perhaps with any other hardware?Best regards,Michael Sachs